The way you set your chassis up for wet conditions, is pretty much the same for all brands. One off the best setup guides out there is the one from Arrow Karts http://www.racekarteng.com.

If you read that, you will have a much better understanding of what it takes to race in the rain. More often than not, you do not have the time to do all the changes, so what I do is widen the front, short hubs and narrow the rear, take off the seat struts, and I have a rubber mat about 1″ thick cut to fit the bottom of my seat which I sit on, that way I raise my centre of gravity.